Learn traditional nursery rhymes along with movements that illustrate the stories. For “Little Bo Peep” this would include pantomiming looking for lost sheep. For “Jack and Jill” it would include falling down.
Put several small objects in a basket, and pass the basket around. For each child, ask them to hold up the thing in the basket that rhymes with a word that you say. If you say "blue," he might hold up a container of glue. Don’t worry about finding words for the objects, because you can use made up words like "fissers" for scissors. You can do the same thing with alteration, either in a separate game or in the same game.
Draw several objects on the board. Use simple drawings like a dog, a house, a tree and the sun. Ask different children to go to the board and erase the thing that rhymes with a word you say. You can also use the same activity to teach alteration skills.
Show a picture to the class and ask if anyone knows what it is. Then ask for a rhyming word. Then ask for a word that starts with the same letter. You can do the same thing with written words. First, you ask what the word is and read it if nobody knows. Then ask for a rhyme. Then ask for a word that starts with the same letter.
Look around the room and say, "I see something that starts with the letter T." The children guess until one of them gets it right. Then ask someone else what rhymes with that word. It is perfectly OK to use a nonsense word here.
You say something like "I am going to Boston and I am taking a baseball." The thing you are taking has the same first letter as the destination. The first child repeats the entire phrase and adds one item that starts with the same letter. This continues with each child adding a new item until the phrase becomes too long to remember.